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(No Model.)

J. J AGOBS.

ILLUMINATING AND VENTILATING TILE.

No. 467,814. Patented Jan. 26, 1892.

UNITED STATES PATENT OFFICE.

JACOB JACOBS, OF NEW YORK, N. Y.

ILLUMINATING AND VENTILATING TILE.

SPECIFICATION forming part of Letters Patent No. 467,814, dated January26, 1892.

I Application filed June 19, 1891- Serial No. 396,877. (No model.)

To all whom it may concern:

Be it known that I, JACOB JACOBS, of New York, in the county of NewYork, and in the State of New York, have invented certain new and usefulImprovements in Illuminating and Ventilating Tiles; and I do herebydeclare that the following is a full, clear, and exact descriptionthereof, reference being had to the accompanying drawings, in whichFigure l is a perspective view of my lens from the upper side. Fig. 2 isa like view of the same from the lower side, and Fig. 3 is a section ofsaid lens through the centers of a line of openings after it has beenset within a supporting-frame.

Letters of like name and kind refer to like parts in each of thefigures.

The design of my invention is to furnish means whereby a space may belighted and ventilated without permitting any material inflow of waterduring a storm; to which end my said invention consists in theconstruction of the lens, substantially as and for the purposehereinafter specified.

In the carrying of my invention into practice I provide a lens A,preferably square, which upon its upper side is provided with squareprojections a a, that are arranged in parallel rows and have preferablyinwardly and upwardly sloping sides. Upon the upper side of eachprojection a is a centrally-arranged circular boss a, which is alsoprovided with sides that incline inward and upward and at its center hasan axial opening a that extends inward into a circular recess ad, whichis formed within the inner face of said lens andhaspreferablyasemi-spherical form. The lens thus formed is cemented within a suitableframe B with the V-shaped grooves d that are formed by the contiguousinclined sides of the projections to and a flush with or slightly abovethe general face of said frame, and when thus placed permits of a freecirculation of air through the openings a a while operating topractically prevent the admission of rain, as only so much rain as mightfall directly into said openings would pass through the same, theremainder being conveyed away through the grooves in the lens. Byproviding the series of elevations the upper ends of theventilatingopenings are placed in planes considerably above the plane ofthe bottom of said grooves, so that considerable water would have toaccumulate before reaching a level, which would cause it to pass intosaid openings, and because of the declivity of the sides of saidelevations the speedy discharge of such water as may fall thereon intothe grooves is insured.

Having thus described myinvcntion, whatI claim is- L As an improvementin illuminating-tiles, a lens having on its upper surface a number ofprojections bounded by straight sides, which projections are separatedfrom each other by spaces forming channels for the passage of water andeach of which is perforated by a vertical opening, substantially as andfor the purpose specified.

2. As an ilnprovementin illuminating-tiles, a lens having on its uppersurface a number of projections arranged in straight lines and boundedeach by straight vertically-inclined sides separated from those ofadjacent projections, so as to form straight continuous water'channels,and each projection perforated by a vertical opening, substantially asand for the purpose shown.

In testimony that I claim the foregoing I have hereunto set my hand this16th day of May, 1891.

JACOB JACOBS.

Witnesses:

GEO. W. Tron, D. G. BEECHING.

